package com.atguigu.springcloud.service.Impl;

import com.atguigu.springcloud.service.IMessageProvider;
import org.springframework.cloud.stream.annotation.EnableBinding;
import org.springframework.cloud.stream.messaging.Source;
import org.springframework.messaging.MessageChannel;
import org.springframework.messaging.support.MessageBuilder;
import javax.annotation.Resource;
import java.util.UUID;


/**
 * @author 武文玉
 * @date 2022/1/18 0018 18:07
 */
@EnableBinding(Source.class)   //定义消息的推送管道
public class MessageProviderImpl implements IMessageProvider {

    @Resource
    private MessageChannel output;//消息发送通道

    @Override
    public String send() {
        String serial = UUID.randomUUID().toString();
        output.send(MessageBuilder.withPayload(serial).build());
        System.out.println("serial = " + serial);
        return null;
    }
}
